Ventilating fan



J. SOMMER VENTILATING FAN Sept. 8, 1925.

Filed Jan. 5, 1924 iii Patented septt 'fl, 1925.

.TOSEPH SUMMER. OF ELIZABETH,-NEW JERSEY.

VENTIMQTINQ FAN.

Application filed January 3, 1924. Serial No. 684,180.

To (ZZZ whom it may concern:

Be it lniown that I, JosnPH SoMMan, a citizen of the United States, residing at Elizabetln'in the cbunt-y of Union and State of llew'll ersey, have invented certain new and useful Improvements in a Ventilating Fan, or which fthe following is a specification. i

This invention relates to improvements 1n ventilating fans, and more particularly to that type of fan which is rotated by movement of the air. g

An important ohjept of the invention is to provide a ventilating fan which may be mounted upon railway cars or the like, and driven by movement of the air caused by movement of the said car.

A. further object of the invention is to pro vide a device of this character which will cause circulation or the air within railway coaches and the like. 7

.A :further object of the invention is to provide a device of thischaracter which is numerals are employed to designate like parts throughout the some:

Figure his a top plan view of the device, and

vlliguro 2 is a vertical sectional view taken through the center thereof, and showing the device mounted upon a railway car roof or the like. y

In the drawing, wherein for the purpose of illustration is shown the preferred embodiment of my invent-ion, the numeral 5 generally denotesf thebjan or wind wheel which'ispositioned a vs the roof of the car, and comprising a. mi) 6 which has a' collar Tffil'filfldlllt 9.1 therewith, the said collurhaving a bal ruceB formed in the lower face thereof. The huh 6 carries a means and inclined at a suitable a e.

plurality of blades 9 which may bo secured .lhercto by'uneans of studs or any suitable fan 5 is rigidl secured to a vertical shaft 'ated by the'windr I provide a tubular bushing 12 which fits firm ioey means 0 f a; in 11 thereby causing rotation oithe sha y over the shaft and pcnetratesthe The.

when the some is actir,

e ball race 8 formed in the collar 7. The

flange 13 is threadedly connected to the tubular bushing 12 and is adapted to retain same in position. A plurality of ball bearings 15 are positioned within the races 8 and 114 aznd act as bearings for the revolving col- The lower extremity of the shaft 10 carries a fan 16 similar in construction to the aforementioned fan 5-and connected thereto as previously described for fun 5. In order to prevent the danger of persons or objects coming in contact with the revolving fan blades of the inner revolving-fan 16, a wire guard 17 is secured to the roof of the car and covers the fan. The wire guard 17 is comprised of a screen 18 and cross braces 19 which support the screen and strengthen the structure thereof. The central portion of the guard 17 has a disk 20 secured there in, the disk being internally threaded and adapted to receive the stop bolt 21 which has a knurled head 22 formed on the lower portion thereof and a disk 23secured to the upper eigaemgity, the disk being preferably construe of leather or like material and adapted prevent rotation of the fan when it is so (1 ird.

In use the device may be mounted upon the roof or sides of a railway car or the like, the outside fan 5 being rotated by the wind or moving current of air and causes rotation of the shaft 10 which carrics the inside fan 16 and rotates same within the guard 17. Obviously the device will add greatly to the comfort of the passengers by reely circulating the air through the coaches and cooling the atmosphere therein. -The rotation of the fan is dontrolled by the hand screw 22 and if desired this hand screw may be forced tightly against the fan shaft and prevent rotation thereof.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as the preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention, or the scope of the subjoined claim.

Having thus described iny invention I clain1- A ventilating fan of the character described comprising a shaft extending througlrthe roof or sides of a vehicle, a tuhulzir bushing surrounding the shaft, a pair of flanges threadedly connected to the tubular bushing and adapted to retain the same in position, a, pair of fan wheels co1nprising hubs having a collar formed on the extren'iity thereof, ball races formed in the collars and adapted to co-act with similar ball races formed in the flanges, hell been ings positioned within the races, a plurality of fan blades secured to the hubs, means for securing the hubs to the extremities of the shaft, :1. screen guard positioned about the interior fan Wheel, a thumb screw positioned Within the center of the screen guard and adapted to control movement of the rotating fan.

In testimony whereof, I have affixed. my signatule.

JosEPH SOMMER. 

